Automatic pressurized hair curler carrying cold waving solution



July 21, 1964 HATTQN 3,141,463

AUTOMATIC PRESSURIZED HAIR CURLER CARRYING COLD WAVING SOLUTION FiledMarch 9, 1962 2 Sheets-Sheet 1 l IIIIIH FIG. 3

GOLDEN GRACE HATTON INVENTOR.

ATTORNEY y 1964 G. s. HATTON 3,141,463

AUTOMATIC PRESSURIZED HAIR CURLER CARRYING cow WAVING SOLUTION FiledMarch 9, 1962 2 Sheets-Sheet 2 FIG. 6

FIG. IO

GOLDEN GRACE HATTON INVENTOR.

ATTORNEY United States Patent 3,141,463 AUTOMATIC PRESSURIZED HAIRCURLER CARRYING CQLD WAVENG SOLUTIQN Golden Grace Hatton, 332 SE. 2ndAve, Miami, Fla. Filed Mar. 9, 1962, Ser. No. 178,705 Claims. (Cl.l3242) This invention relates to an automatic cold permanent wave curlerfor use in the cold permanent waving of hair.

Straight hair is permanently waved by creating a strain on the roundhair shaft by winding it on a curling rod, and then permanentlyflattening'the hair shaft by a chemical rearrangement of the molecularstructure of the hair shaft. To produce a cold permanent in thepresently well known conventional manner, strands of the hair are woundtightly around curling rods of various desired diameters and thensecured in place by a length of rubber band, or other flexible material.These coiled hair strands are then wet with a suitable cold wavingsolution by the operator, who applies it to the outer exposed surface ofthe roll or coil of hair using hand-held cotton pads. In this process,the outer layers of the coil or roll of hair is that portion of the hairstrand which grows nearest the scalp. This outer layer receivestherefore, a more thorough impregnation than the inner layers which arewound close to the curling rod. Therefore,

the hair closest to the root receives a tighter curl than the outer endsof the hair strand which is often left uncurled. This is exactly thereverse of the desired effect, since a more pleasing wave is producedwhen the outer end portions of the hair strand receive the tighter curl.

Another objection to performing this operation by present known methodsis that it is almost impossible to thoroughly saturate the rolls orcoils of hair without wetting the scalp with the waving solution, andeven having the solution dripping into the face of the subject. This isextremely undesirable since such solutions are usually irritating to theskin and unpleasant or even dangerous in the eyes, nose or mouth. Thehands of professional hair dressers, or, in the case of the home wave,the user who personally applies the curling fluid herself, arefrequently irritated and burned by the acid contained in the curlingfluid. This acid quickly builds up a sensitivity to the solution in theskin of the hands of the operator or user, and makes it necessary forthe hair dresser or beautician or the person giving themselves a homewave to have to work in rubber gloves.

Many hair dressers have had to give up the profession entirely, eventhough their basic education in time and money was expensive, and gointo less inviting means of a livelihood for this reason alone. Theyactually become allergic to more and more chemicals used in their workbrought about solely by first becoming allergic to cold Wave solutions.

Another disadvantage to presently used methods is that the operator orbeautician has had to wet the hair with the wave solution and wind themost resistant section of the hair first, usually the back of the headfrom ear to ear to the nape of the neck. The wave solution startsprocessing this section immediately, so that by the time that the entirehead is finished and the operator is ready to apply the solution to thetop of each upper and frontal individual rolled curl, some of the hair,as a consequence, is usually over-processed, making the hair dry andbrittle and too curly in places.

All modern cold waves stress one point, the rolled hair must be wetthoroughly, if the hair has been wound too tightly, it is almostimpossible for the wave solution to penetrate through from the outerstrands of the coil of hair down to the inner ends.

The user is frequently disappointed as a consequence, to find that whenthe curlers have been removed, her wave is as nice as she desires closeto her head, that is, the hair wound as the last layer on the outersurface of the coiled hair, but that the outer ends of the strands ofhair, when unwound, are objectionably straight, for about one-half of aninch to an inch and a half from the outer end is straight due to lack ofpenetration of the cold wave solution. This is caused because the outerend of the strand of hair becomes the inner layer of the roll of hair onthe curling rod. The wave is not uniform due to inability to work fastenough or faster than the processing time of the solution.

The aim of permanent waving is to give a natural curl to straight hairso that the hair may be brushed, shampooed and handled as though it werenaturally curly.

All of the past cold Wave methods have been distinctive in that thesolution is applied to the outside of the round curl of hair. Someattempts have been made to apply the solution from the inside out butall have failed because the wave solution is not evenly distributed.

The automatic curlers of this invention avoid and overcome all of thesedifliculties in a novel and highly successful manner. The advantages ofthe structure of this invention are accomplished by, first, no solutionis applied to the hair when winding, secondly, the hands can not contactthe waving solution at any time. Third, this operation is completelyautomatic. Fourth, the solution is forced outwardly under pressure.

In the use of the novel automatic permanent cold wave curler of thisinvention, the hair is shampooed and towel dried, then rolled dry. Theoperator or individual user then starts on the head anywhere, a slowoperator can get the same good results as a fast operator, or aninexperienced operator using a home permanent kit, can obtain as goodresults as the professional by the use of the automatic pressurizedmethod of this invention.

After all the curlers are in place, a simple quick twist at the end ofeach chambered curling rod, constructed in accordance with thisinvention, releases the cold wave solution from within the interiorchambered portion of the rod so that it first saturates the ends of thestrand of hair, which is of the first layer, that is wrapped around therod. The wave solution is then moved on outwardly through the entirehair coil to the outer strands of hair which form the top layer of therod even though it may be very long hair. Since the ends of the strandsof the hair, which are the first strands which are wrapped around thecurling rod, receive the solution first, a curly outer end of the hairstrand is insured each and every time. The wave will be uniform over theentire head as it requires only a minute to automatically release thesolution by a quick short twisting movement, giving the same processingtime for all curls.

The curling rods of this invention are made of lightweight materials,such as plastic, thin metal foil, or any suitable other material, andcan be manufactured so cheaply that the curling rods are disposable.They are never re-used. This is an important factor, particularly in apublic beauty salon where it is not practical to sterilize the presentlyused cold wave rods to a point where they are completely sterile forre-use. The rubber bands or flexible straps make it almost impossible tosterilize them. Another problem, which is solved by this invention, isthat a woman can choose her desired hair style, that is, short, finehair can be wound around a rod of smaller diameter containing less wavesolution. A woman desiring a softer, larger wave will use rods that areof larger diameter, and may contain a milder solution, if desired.

Each cold wave kit contains a set of necessary number of rods, endpapers, and ready-mixed neutralizer for waving one complete head ofhair. All are disposable.

For dyed and bleached hair or abused hair, a conditioner of any desiredtype, which is simple and pleasant to use, may be included.

A teenage school girl can be assured of an absolute curly permanent.

The hairdressers can work faster and more accurately without fear ofsore, acid irritated and burned hands.

One of the outstanding features of this invention is that the curlingsolution is enclosed and self-contained within the chambered curlingrod, which is formed as a hollow cylinder, and after the hair has beenwound upon the curler and the rubber or elastic fastener has beensnapped over it to hold it in place, it is ready for a final quick shorttwisting operation which releases a container of any suitablecompressible gas which may be CO that is carbon dioxide, Freon ornitrogen for example, by puncturing the fragile side wall of thecompressed gas container. This same quick short twisting motionsimultaneously aligns the elongated slots of the outer and innercylinders which, when assembled, make up the chamber containing the coldwaving solution.

In other words, after the operator or user has wrapped the curls abouther head, a final quick, short quarter turn of the end piece of theassembled unit will cause the slots to be aligned permitting the curlingsolution to be forced outwardly, under pressure, into the hair wrappedabout the curler.

No solution is sprayed on the outside of the curl, as in present popularuses or methods.

No separate bottle or spray can of the solution is required since it isall self-contained.

The flow of the solution outwardly from the center of the curler intothe hair, being under pressure caused by the CO or other suitable gas,provides more even application and thorough curling and soaking of thehair with the wave solution, particularly on the inner ends of the hair.The curling rod of the present invention works quicker, is less messy touse, and has many other advantages.

This method is a definite advance in the art of cold permanent waving ofhair because the hands of the operator never come in contact with thewaving solution while winding the hair on the curling rod.

The solution being sealed at the factory within the curling rod itself,prevents oxidation of the reducing agent in the cold waving solution bythe oxygen of the air progressively diminishing and ultimatelydestroying the effectiveness of the solution in the production of apermanent curl.

Having now indicated the general nature of this invention, we proceed toa more detailed description thereof with reference to the accompanyingdrawings in which the same reference characters are used to designatelike parts throughout the several views.

In the drawings:

FIGURE 1 is an exploded view of one of the threepiece curling rods madein accordance with this invention, before assembly.

FIGURE 2 is an enlarged cross sectional view of one of the curling rodsmade in accordance with this inveness 4i tion, shown in its assembledposition ready for delivery to the customer, with the cold wavingsolution sealed within a central chamber therein, and also illustratingthe chamber which encloses the CO gas.

FIGURE 3 is a front view illustrating a user about to apply theinvention, the hair having been curled about the curling rod, the viewbeing partial in cross section illustrating the moment of simultaneousalignment of the discharge slots and the release of the fluid underpressure of the CO gas.

FIGURE 4 is a cross sectional view taken on the line 4-4 of FIGURE 2,illustrating the position of the parts before the final twistingoperation.

FIGURE 5 is a cross sectional view, similar to FIGURE 4, butillustrating the position of the parts after the final twistingoperation.

FIGURE 6 is a large cross sectional view of a modified form of thisinvention.

FIGURE 7 is a cross sectional view taken on the line 7-7 of FIGURE 6,illustrating the protective seals in unbroken position with the liquidcold wave solution locked within the center chamber of the curling rod.

FIGURE 8 is a cross section similar to FIGURE 7, showing the curling rodof this invention after the outer cylinder has been rotated 180, whichbreaks the thin fragile seal and permits the curling liquid to be forcedoutwardly into the hair wound around the rod under pressure.

FIGURE 9 is an oversized enlarged detailed cross sectional view, similarto FIGURE 7, but showing the sealing means which closes and seals theopening through which the curling fluid will ultimately pass.

FIGURE 10 is a similar oversized enlarged cross sectional view showingthe seal after it has been ruptured and broken to permit the wave fluidto be forced under pressure outwardly through the coil of hair.

The various elements of this modified form of the curling rodmanufactured in accordance with this invention, shown in FIGURES 6through 10, are substantially identical as to most of the features whichare shown in FIG- URES 1 through 5, except for the type of seal employedand the degree of twisting required to release the wave solution underpressure.

FIGURE 1 of the drawing is an exploded view of one of the curling rodsmade in accordance with this invention. It comprises essentially threemajor parts. There is shown the outer cylinder A, about which the strandof hair to be curled is wound, the inner cylinder B, and end plug C,which are to be assembled at the place of manufacture before delivery tothe ultimate user, in the manner illustrated in lengthwise cross sectionof FIG- URE 2, and partial section of FIGURE 3.

In the first form of this invention, it will be noted that the outercylinder A, about which the hair is to be wound, may be made of plastic,light metal, or any other suitable material. Outer cylinder A has a pairof elongated slots 15 and 16 cut therethrough at diametrically oppositesides of the cylinder A, as shown in FIGURES 1, 2, 3 and 4 of thedrawings.

The inner cylinder B is of similar material and of an external diameterto provide a very snug and exact fitting within the confines of theouter cylinder A when inserted therein, as shown in FIGURE 2. This innercylinder B also has a pair of similar longitudinally extending slots 18and 1?, which are diametrically opposed to each other but arranged at aangle of the arc of the cylinder with respect to slots 15 and 16 ofouter cylinder A, as is clearly illustrated in enlarged cross section inFIG- URE 4. Inner cylinder B is provided with screw threads 20 formedaround one end of its outer periphery, as illustrated in FIGURES 1 and2, and the inner walls of the corresponding end of outer cylinder A aresimilarly threaded internally at 21. That is to say, when the cylinder Bis inserted into the cylinder A, B acts as the male member, A serves asthe female member, and the threads 20 of B are the threads carried bythe male member, which may be screwed into position through engagementwith the threads 21 of the outer female member A. The cylinder B, whenso inserted and assembled, contains the hair curling fluid, asillustrated in FIGURES 2, 4 and 5.

The end plug C is inserted in the opposite end of cylinder A and isthreaded at 24 to engage the threads 25 which are formed on the innersurface of cylinder A at the end where the plug C is inserted, as shown.Plug C becomes the male member in this instance, and is inserted intothe female member A by screw threading when assembled at the factory. Itis to be understood that this assembly may be efiected by a drive fitconnection without threads, if desired, or it may be welded orpermanently fixed to close and seal off this end of cylinder A by anywell known means which will fix the cylinder C in fixed position in theend of the outer cylinder A of the curling rod once it is in place.

It is not to be moved thereafter. This end plug C contains CO gas, orother suitable gas, for creating pressure when released, which is sealedin at the factory and has an end wall 26 which is of light metal andwhich may be readily pierced or ruptured when desired.

The inner end of the internal cylinder which contains the curling fluidhas a sharp center point 27 fixed thereon, adapted to pierce this thinmembrane 26 of the CO gas contained in plug C.

A suitable projecting knob 39 extends outwardly from the end of the plugC, and a similar projecting knob 31 extends outwardly from the liquidcontaining plug B, as clearly shown in FIGURES 2 and 3.

A strap or elastic cord 32 is slipped over the projecting knob 30 bymeans of an aperture 33, which is adjacent the end of the strap, asclearly shown in the drawings. This strap 32 also has an aperture 34formed adjacent its opposite end which can be snapped in position overthe projecting lug 31 of the inner cylinder B, when desired, as clearlyshown in FIGURE 2. This strap may be of any suitable elastic materialand is well known in the art.

The operator wraps the hair around the completely assembled three-piececurling rod, as shown in FIGURE 3, which hollow rod contains the liquidcurling fluid sealed therein, as shown. When the hair has been wrappedabout the cylinder A the desired number of turns, the elastic strap 32is snapped in position over the projecting lug 31 to hold the hair infixed curled position around the curling rod.

After the operator has completely wrapped all of the curls desired inthis fashion, ten, twenty or more, it will be noted that up to thispoint, the hands of the operator or user have not contacted the liquidcurling fluid acid in any way, it all being sealed within the assembledthreepiece curling rod, A, B and C.

Now all that remains to be done is to give the outer knurled end 35 ofthe inner cylinder B a quick twist which amounts to a quarter turn, thatis 90, whereupon two things happen. First, the threads 24 and 25 permitthe male member B to be further screwed and advanced into the femalemember A. The pair of slots 18 and 19 of the inner member B are therebybrought into alignment with the slots 15 and 16 of the outer cylinder A,which for-ms the curler about which the hair curl has been coiled asshown. Second, this same quarter turn movement advances the innercylinder B sufficiently for point 27 to pierce the membrane 26 of the COgas containing plug C. This gas then escapes from the plug C into thecentral part of the curling rod and on through the slots 18 and 19 ofthe inner liquid containing cylinder B and the aligned slots 15 and 16of outer cylinder A, through the coiled hair under positive uniformpressure of the CO gas.

In order to insure an exact alignment of the slots 15 and 16 of outercylinder A and the slots 18 and 19 of inner cylinder B and to effectexactly a quarter rota- 5 tion movement, a pair of stops 36 and 37 havebeen formed or fixed on cylinder A adjacent the slots 15 and 16 of saidouter cylinder, which are arranged in position to abut projecting stoplugs 38 and 39 which are carried by the outer projecting knob 35 of theinner cylinder B, as clearly illustrated in FIGURES 4 and 5.

FIGURE 4 shows relative position of the parts of the automatic coldpermanent wave curler of this invention in the position they assumebefore use, with the slots of the cylinders A and B as they would bearranged when they leave the factory with the liquid hair curling fluidcontained and sealed therein.

FIGURE 5 illustrates the automatic cold permanent wave curler of myinvention after it has been given the quarter turn, above described,which aligns the slots 15 and 16 of the outer cylinder A with the slots18 and 19 of the inner cylinder B, after point 27 has pierced thesealing Wall 26 of end plug C permitting the CO gas to force the liquidout under pressure through the coiled hair so that it becomes instantlyand thoroughly saturated from the inside out. This operation of aligningthe respecitve slots, 15, 16, 18 and 19 and releasing the CO gas tocreate the desired pressure, is quick, automatic, and prevents anycurling fluid acid to contact the operator or users hands.

Another form of this invention, designed to meet the same conditions andprovide inside-out flow of liquid under strong instantly releasedpressure in a manner whereby the operator or user does not get the fluidon her hands during the operation, is illustrated in FIGURES 6, 7, 8, 9and 10 of the drawings.

This alternative form works in nearly the same manner as the onepreviously described, with the single exception that the diametricallyopposed slots 15, 16, 18 and 19 of inner cylinder B and outer cylinderA, respectively, through which the curling fluid flows under pressure,are in alignment as assembled at the factory, but sealed by a thin metalfoil or other suitable material membrane 49 and 41 when the automaticcold permanent wave curler is assembled and the fluid is permanently andpositively sealed within the hollow curled cylinders A and B, againstany evaporation or possible leakage or damage, and these seals, 40, 41,are not broken until the operator gives the final quick twist whichcauses point 27 to pierce the wall 26 of the CO gas container C andpermits this gas to force the curling fluid outwardly under strongpressure through said slots to thoroughly saturate and impregnate thehair which is wound about the curler.

In detail, this alternative method is arranged as follows:

The same three major parts A, B and C are utilized. That is outercylinder A, with inner cylinder B inserted therein at the factory, as isend plug C which contains the CO gas.

The point 27 is provided for piercing the thin wall 26 of container C torelease the gas, and end knobs 30 and 31 are provided for securingflexible strap 32. The only difference in the modified form of automaticcold permanent wave curler, illustrated in FIGURES 6, 7, 8, 9 and 10, isthat elongated slots 18 and 19 of the inner cylinder B of this modifiedform are aligned when assembled with elongated slots 15 and 16 of outercylinder A.

Seals 4t) and 41, made of aluminum foil or any other easily rupturedmetal or plastic material, are provided, as clearly shown in FIGURES 7,8, 9 and 10. These seals are fixed to the outer cylinder A and innercylinder B of the device in any suitable leak proof manner, by adhesivesor otherwise, extending across the aligned slots 15-18 and diametricallyopposed aligned slots 16- 16, as shown.

This arrangement completely seals the waving fluid within the centralchamber of the curling rod when assembled at the factory. It positivelyprevents leakage and evaporation when the curlers are stored or intransit.

When the operator or user has wound all of the hair curls about all ofthe curling rods desired, she releases the curling solution by a quickone-half turn of outer end knurled knob 35 of inner cylinder B relativeto outer cylinder A. This rotation of inner cylinder B within outercylinder A advances the inner cylinder B by means of screw threads 26and 21, screwing it in the predetermined amount necessary for point 27to puncture or pierce the thin wall 26 of the CO gas container, end plugC. This releases the gas.

This one-half turn, or 180, simultaneously tears or ruptures the seals40 and 41, thus permitting the curling fluid or wave solution to beforced outwardly through the aligned slots under strong even pressurewhich insures even and complete distribution of the liquid wave solutionthrough the coils of hair, from the inside of the chambered rod out.

Stops or suitable abutments 4-5 and 46, fixed to the outer and innercylinders A and B respectively, serve to realign the discharge slotsaccurately after a 180 or onehalf turn, as shown in FIGURES 7 and 8.

Changes in structural details are contemplated which come within thescope of the appended claims.

It is also understood that this device may be used with any form ofcurling or wave solution suitable for producing cold permanent waves orcombined curling lotion and neutralizer liquids, for example, ifdesired.

1 claim:

1. An automatic cold permanent wave curler of lightweight chemicallyresistant material comprising an outer cylinder adapted to receive acoil of hair Wound thereabout, apertures in the wall of said outercylinder adapted to permit flow of curling fluid therethrough, an innercylindrical curling fluid container fitted within said outer cylinder, apredetermined amount of curling fluid contained in said inner cylinder,apertures in the wall of said inner cylinder adapted to permit the flowof curling fluid therethrough, the apertures of said inner cylinderbeing arranged out of alignment with the apertures of the outer cylinderas originally assembled whereby the curling fluid is sealed Within thecurling rod, a third cylindrical container adapted to contain acompressed gas, said third cylinder operatively mounted in one end ofsaid outer cylinder, a predetermined amount of compressed gas sealedwithin said third cylindrical container, the inner wall of saidcylindrical compressed gas container being of light, thin material, aprojecting pointed member formed on the inner end of the inner cylinderadapted to pierce the thin inner wall of the gas container when it isadvanced toward said wall, screw means to advance said projecting pointinwardly when desired in a manner to pierce the inner wall of the gascontainer and release the compressed gas contained therein and tosimultaneously align the apertures of both the inner and outer cylindersto permit the released compressed gas to force the curling fluidoutwardly through said aligned apertures under pressure into the coil ofhair wound about the curling rod and saturate it.

2. An automatic cold permanent wave curler, as described in claim 1,wherein the apertures in the walls of the outer and inner cylindricalcontainers comprise elongated slots.

3. An automatic cold permanent Wave curler, as described in claim 1,wherein the fit between the outer and inner containers is close enoughwhen they are assembled one within the other to seal the curling fluidwithin the containers when the apertures of each cylinder are out ofalignment with each other and adapted to release said fiuid for outwardflow only when said apertures are brought into alignment, and means torelease the compressed gas and align said apertures simultaneously.

4. An automatic cold permanent wave curler, as described in claim 1,wherein the inner cylindrical curling fluid container is screw threadedin one end of the outer cylinder, and aligned stop members are providedon each of the outer and inner cylinders to assure accurate alignment ofthe discharge apertures when the stop members abut each other.

5. An automatic cold permanent wave curler, as described in claim 1,arranged in a manner whereby the said apertures of both the inner andouter cylinders may be aligned simultaneously with the piercing of theinner wall of the cylindrical compressed gas container by the projectingpoint which is operatively associated with the inner end of the innercylinder whereby to release the compressed gas and permit it to forcethe curling fluid outwardly through the aligned slots under uniformpressure by a single short twisting action.

6. An automatic cold permanent wave curler constructed of disposablelightweight chemically resistant material comprising three principalparts, the first part being an outer hollow container adapted to receivea coil of hair wound thereabout; the second part being an inner hollowcontainer snugly fitted within said outer container and which contains apredetermined amount of curling fluid, apertures formed in the wall ofthe first and second containers which are arranged out of alignment witheach when originally assembled; the third part containing compressed gasoperatively associated with one end of the outer cylinder, and quickoperating means to simultaneously align the apertures of the first andsecond containers and release the compressed gas from the thirdcontainer to permit the curling fluid to be forced outwardly through thealigned apertures under pressure to saturate a coil of hair wound aboutthe curling rod.

7. An automatic cold permanent wave curler, as described in claim 6,having single means for causing alignment of the apertures to permitpassage of the curling fluid therethrough and simultaneously causing therelease of the compressed gas to force the curling fluid outwardlythrough the aligned apertures into the coil of hair formed thereabout,said means causing the inner container to rotate Within the outercontainer.

8. An automatic cold permanent wave curler device made of chemicallyresistant material which comprises an outer container, dischargeapertures formed in the side walls of said outer container, an innercontainer, discharge apertures formed in the side wall of said innercontainer, a predetermined amount of hair curling fluid sealed withinsaid containers, a third container of compressed gas operativelyassociated with said inner and outer containers, the discharge aperturesof the inner and outer containers being aligned with each other asoriginally assembled, sealing means operatively associated With saidinner and outer containers extending across said apertures in a mannerto seal the curling fluid within the outer and inner containers whenoriginally assembled, means for rotating said inner container inrelation to said outer container, to break the seal between saidcontainers and release the curling fluid, and to release the compressedgas from its container to permit the curling fluid to be forced underpressure through the discharge apertures of the inner and outercontainers into the coil of hair wound about the outer container.

9. An automatic cold permanent wave curler device of chemicallyresistant material comprising an outer cylindrical container about whicha coil of hair may be wound, diametrically opposed discharge slotsformed in the walls of said outer container, an inner cylindricalcontainer, diametrically opposed discharge slots formed in the walls ofsaid inner container, a predetermined quantity of curling fluid sealedwithin said inner container, the discharge slots of the inner and outercontainers being in alignment as originally assembled, a leakproof sealof thin chemically resistant material arranged to extend over said slotsin a manner which closes said slots against the passage of curling fluidsealed within the inner container, a third cylindrical container havinga quantity of compressed gas sealed therein which is located on one endof the inner and outer cylinders, and single means to rotate the innercontainer Within the outer container through an arc of 180 tosimultaneously break the leakproof seal extending over the aligned slotsto release the curling fluid, release the compressed gas from itscontainer, and realign the diametrically opposed discharge slots in amanner to permit the curling fluid to be forced outwardly through saiddischarge slots under pressure into the coil of hair wound about theouter cylinder.

10. An automatic cold permanent wave curler, as described in claim 9,having projecting stop members on each of the outer and inner cylinders,said stop members 10 being adapted to abut each other upon a 180 turn ofthe inner container within the outer container, to accurately realignthe discharge apertures after the turn is made.

References Cited in the file of this patent UNITED STATES PATENTS1,099,767 Read June 9, 1914 2,747,585 Allen May 29, 1956 10 2,781,763Casey et al Feb. 19, 1957

6. AN AUTOMATIC COLD PERMANENT WAVE CURLER CONSTRUCTED OF DISPOSABLE LIGHTWEIGHT CHEMICALLY RESISTANT MATERIAL COMPRISING THREE PRINCIPAL PARTS, THE FIRST PART BEING AN OUTER HOLLOW CONTAINER ADAPTED TO RECEIVE A COIL OF HAIR WOUND THEREABOUT; THE SECOND PART BEING AN INNER HOLLOW CONTAINER SNUGLY FITTED WITHIN SAID OUTER CONTAINER AND WHICH CONTAINS A PREDETERMINED AMOUNT OF CURLING FLUID, APERTURES FORMED IN THE WALL OF THE FIRST AND SECOND CONTAINERS WHICH ARE ARRANGED OUT OF ALIGNMENT WITH EACH WHEN ORIGINALLY ASSEMBLED; THE THIRD PART CONTAINING COMPRESSED GAS OPERATIVELY ASSOCIATED WITH ONE END OF THE OUTER CYLINDER, AND QUICK OPERATING MEANS TO SIMULTANEOUSLY ALIGN THE APERTURES OF THE FIRST AND SECOND CONTAINERS AND RELEASE THE COMPRESSED GAS FROM THE THIRD CONTAINER TO PERMIT THE CURLING FLUID TO BE FORCED OUTWARDLY THROUGH THE ALIGNED APERTURES UNDER PRESSURE TO SATURATE A COIL OF HAIR WOUND ABOUT THE CURLING ROD. 